Dental apparatus



July 2 19`29- o. H. PIEPER ET AL 117.19.306

I DENTAL APPARATUS Filed March 18, 1925 3 Sheets-Sheet 1 Mig? f i? @www July 2 l929- o. H. PIEPER ET AL DENTAL APPARATUS Filed March 18, 1925 3 Sheets-Sheet 2 Jnaea/ i Z/fae@ 6 e 5 amp'eyocf m @iw/2 July 2, 1929.

o. H. PIEPER r AL DENTAL APPARATUS Filed March 18, 1925 3 Sheets-Sheet 5 Patented `luly 2, 1929.

UNITED STATES PATENT OFFICE.

OSCAR H. PIEPER AND ALPHONSE F. PIEPER, OF ROCHESTER, NEXV YORK.

DENTAL APPARATUS.

Application led March 18, 1925. Serial No. 16,267.

Our invention relates to dental apparatus and conten'iplates a new structure ot the type known as unit equipments, i. e. equipment@` which comprise numerous dental instrument in unitary assembly.

The invention lienl in the particular manner of mechani'ally mounting various deviceb` requiring leupplies ot' compressed air, water. gas and electric current. and its ob- 10 ject is to do so simply and etiiciently and in such a. way that a compact, well balanced assembly of good appearance, with all the operating devices of ready accesa4 and control, will result.

(')ur invention is illustrated in the accompanying drawings7 in which,

Figure 1 is a trent elevational view ot the unit;

Figure 2 iS a side elevational view of the unit` parts being` Shown in dotted lince and parti; being broken away and Shown in aection in order to illustrate the interior construction:

Figure 3 is in part a rear elevational view7 in part a vertical sectional view of the unit on approximately a central plane viewed Vfrom the back;

Fig-)jure #i a horizontal Sectional view taken on the line 4-7-4 ot Figure L and looking dewnwulrdiy. and Fig. h is an enlarged ectional view on plane of Fig. 1.

The main eupporting element is in the torn. ot a hollow pedeetal 5 which i adapted to rest upon a bac-e. which. in turn. reetf` upon the tloor and which pedc tal. at about the middle. on opptwite aides. i# provided with hollow Supporting arno` t3 and T. rcwlwctivelji'.

spittoon S and a ywondary supporting' arm f) mounted upon the euiliporting arm t3. A water supply pipe 10. suitably connected with a main water supply pipe preferably coming up through the tloor. lcadri upwardly trom the bane 11 ot the pedestal 5, through the pedestal and the arin (i. to a union 12 troni which there is a lead 13 tern'iii'iating` in a union 13a. thisv lead being controlled by the cut-ott valve 14A l The Secondary arm 9 terminate: in a head ,15 upon which is mounted the tumbler holder and shield 16, to which water is led .by way ot' piping 17 which connectel with the union 13, the flow of water through piping 1T being controlled by valve v18. Flexible tubing 19, leading from an c icctor in the head 15, leadA to a mouth piece at 2()7 forming a rialiva ejector, being hung, when out ot use, upon the hook 2l supported trom the ietud by way of which the tumbler holder and Shield 'is mounted upon the head 15. The eed otl water is directed either through the ejector and to the Spittoon through exhaust tube 21a or directly to the Spittoon through flushing Lepout4 21 by a suitable valve 22.

A wagte pipe 23 leade. from the bottoni ot the spittoon, through the arm G and downwardly through the pedestal to the base 11. where it is adapted to be suitably connected to a main waste pipe in the floor.

The arm T supports the dental engine, the table7 and a Bunren burner. The arm 7, at ita top, receives the pivotally mounted engine bracket Q4, the lower end ot which providefiA meane` for pivotally mounting the laterally extending auxiliary hollow er channel arm 25. an shown.

ln a suitable vertical bore in the outer end ot the arm Q5 a tube 26 is secured and Bunsen burner '2T ie` screwed into the end ot this tube. Tnat portion of the tube which extentie upwardly beyond the bore in which it is Set also aliords a bearing for the bracket '28 upon the end of which the table 29 is mounted.

A gas pipe SO extends through the arm Q* and threadr into the tube 2G below a valve scat 31 therein. A needle valve 32. which Yforms a :dint-ntf valve for the burner. cooperates with this seat. being adapted to be moved into and out ot contact therewith by means` of the valve-handle 33 into the stem of which the end of the needle-valve is threaded. an shown at. 34. whereby the valve. which is held againet angular movement by means ot pin 35. is moved upwardly or downwardly according to the direction ot rotation of the valve handle. The Stem ot the valve handle in confined for angular movement by the ring 36 and a Suitable gland 3T is provided to prevent leak of gas.

Near the axis upon which the arm swings, the pipe 3() leads into the union set. into the arm 25, and from the bottom of this union a pipe 39 leads downwardly. The arm 7 being curved, the axis upon which the arm 25 swings passes out of it and, upon this axis where it intersects the wall ot the arm T, a valve housing is disposed. The valve chamber thereof is at 4l, and leading downwardly therefrom and coaxially therewith is a bore in which a short pipe 42, extending downwardly out of the housing, is rotatably mounted. a suitable gland 43 being provided to prevent the escape of gas. The lower end of the pipe 39 is turned toward the lower end ot the pipe 42 and there the two ends are connected together. The result is that as the arm 25 swings about its axis, so do the pipes 39 and 42 swing about the saine axis.

The valve seat, within the housing, is at 44, to which the gas line 45 leads, this gas line coniing up trom the base l1. where it is adapted tor connection with the gas line in the floor, through the pedestal 5 and arm 7.

Cooperating with the valve seat 44 is a needle shut-otllvalve 46 which is adapted to be moved into and out of contact therewith by means of the valve handle 47 into the stein ot which the end of the needle valve is threaded, as shown at 48. whereby the valve, which is held against angular movement by means ot pin 49, is moved inwardly or outwardly according to the direction ol rotation ot the valve handle. The stem of the valve handle is confined tor angular movement by the ring 50 and a suitable gland 5l is provided to prevent leali of gas.

Upon the swinging bracket 24. a ydental engine, comprising the usual electric motor articulated belt trame 5S, and handpiece is mounted. the electrical cont'luctors 55. for the motor, coming up to it trom thc pedestal 5. through the arm 7. and through the bracket which is hollow for that purpose and the purpose. of lightness. These eomluctors lead troni the connecting block 56. in the pedestal 5, to which electric current is brought troni the line wires through conduits 5i'. 5i' leading upwardly from the base 11, the main line switch 58, on the front of thc pedestal 5 nca r the top. intervei'tiiw. however. to control all current to the unit. Gn the front of the pcdestal 5, near the bottom. an electrical plug receptacle` 59 is mounted. this receptacle heing connected in the motor circuit and being adapted for the receptiony of a plug 60 at the end ot' a flexible conductor 6l leading from the motor regulator 62.

From the back of the pedestal 5, in the center near the top` another hollow supporting arm 63 extends slightly rearwardly and then upwardly. At its end this arm is provided with two branches, the branch 64, extending directly upwardly, supporting the spot light 65, by way ot the members 66, 66 connected together through universal friction joints, and th'e branch 6i" supporting the electric fan 6T, The electrical conductors for the spotlight and tan come up from the pedestal 5 and through the arni 63, and a. resistance 63 may be provided in the arm 63 for the spot light circuit if the high voltage is 220 volts instead of llt) volts.

le provide a spray-bottle and tumbler heater structure A. which may be set upon the top ol the pedestal This structure comprises three cylindrical receptacles, (I, and C, tor the spray-bottles d and e and the tumbler f. Each receptacle is provided with a suitable heating element connected with an electrical circuit by way of the socket 652L and plug 66 when the structure is set ou top of the pedestal. The heating elements are provided with controls 683, 68h and 68", respectively, whereby the current to cach of them may be turned on and oll' and regulated independent ly olthe others.

At the top ot' the pedestal 5, at the iront, au oblique panel Tt) is provided, and this panel is niort ised tor the reception ot an instrument holder comprising tour tubular receptacles Tl, T2, T3 and 74 and an escutcheon plate 75, the axes ot' the middle receptacles being inclined relative to those ot the outer receptacles, as shown. ln these receptacles various instruments` requiring electric current or air, or both, tor operation, are disposed, and ilexible connections tor t hcse operating mediums, in the way ol. cord circuits, are provided, the instrument handles being adapted to be lodged against suitable stops within their respective receptacles a nd their respective cord circuits extending out ol the lower ends thereot'. 'lhe lower ends of the receptacles are bellcd lo avoid abrasion ot the cords, and the upper ends are belled tor the same purpose when the instruments are in use. 'lhe inclined relation is to avoid interference of the cords with adjacent parts.

A hot air syringe T6 is disposed in the receptacle Tl: a mouth lamp Ti' is disposed in the receptacle T2; a heating instrument, such as a spatula, root canal drier or excavator, To. is disposed in the receptacle 73: and an air control Tt) l'or use with the spray bottles is disposed in Ihe receptacle T4.

lithin the pedestal 5 a` series ol' vertically disposed guide rods St?. Si) are mounted between uppcr and lower supports 6l and 82. respectively. and ou these guide rods counterweights Sil. Ht, and S6 are slidably mounted. These coiuiterweights are provided with pulleys Si', S6. Si and 90, respectively, for the reception ot' the respective instrunient cords. Pulleys ST and 9d are larger than the others Since they receive air tubes, while the others receive simply electrical conductors. The cords and tubes have been omitted from the drawings to avoid confusion, the description sutlieing to make full disclosure. Compressed llS lll

till

air is supplied from below, through the base 11, being then led upwardly, by way ot' piping 91, 92, 93, to the two air connections 91 and 95.

The air connection 9-l is tor the spray bottles, flexible tubing leading theretroi'n passing downwardly around the pulley' 87 and then upwardly to the air control 79 in the receptacle 74. The air connection 95 is tor the hot air syringe, tleXible tubing leading therefrom passing downwardly' around the pulley 99 and then upwardly to tho hot air syringe 7G disposed in the receptacle 71. Electric current is also led to the hot air syringe, this being accomplished by leads from the connection block 96, which will be referred to later, passing into the hot air syringe air tube by way ot the special insulatingr connection 97, and then through the tube to the syringe. Guides 99 hold the tubing to their pulleys. From the connection block 99 electrical conductor pairs lead downwardly, and around the pulleys 88 and 89 respectively, and then upwardly to the mouth lamp T7, inthe receptacle 72, and to the heating instrument T8, in the receptacle 73, respectively.

From the connection block 59 leads are carried up to the regulz'iting transformer 98 by means ot which low voltage is supplied to the connection block 99. To control the voltage of the low voltage circuit the regulator 99 is provided, the handles therefore being exposed on the front ot the pedestal 5 near the top, as shown in Figure 1, as part ot a switchboard. This really comprises two regulators, one tor the mouth lamp and one for the heating instruments, the voltages being independently regulatable from three to twelve volts. A resistance 99 is connected in series with the mouth lamp to prevent excessi vc current passing through the lamp even at the highest point. This switch-board also includes the main line switch which controls all current to the unit, as belore stated, and a low voltage switch 191, which controls the circuit to the transformer, assuming the deviex as a whole lo be supplied with allernating current. 1n the case ol' direct current this switch controls a rotary converter connected to the electric connection block 56. rl`he switchboard also includes a push button 192 for a call bell or buzzer, main line tuse receptacles 193). 19?, and a pilot lamp 19l. This lamp is mounted on a small supporting plate 194"L on the inner ends ot the rodsl 19t" which extend trom the glazed trame 1.9ic and ari sliclable in the lugs 191d on the pedestal wall adja cent to the opening 19.1AC in the wall. Pulling the l'rame away from the opening brings the lamp through the opening and permits easy replacement olI the halb.

From the low voltage connection hloclr 96 a pair ot leads control" Yd by the voltage regulatoI also go to the low voltage plug receptacle 195, conveniently located at the side ot' the pedestal 5, near the top, as shown in Figure 2, where -onnection may be iliade, by plug and cord. Yt'or any additional low voltage instrument desired, such as operating light, head light or the like.

Air valves 199 and 199l are provided for the hot air syringe and spray bottle air lines, respectively, these valves being conveniently located as part ot the switchboard.

A receptacle 19T is also provided on the iront o1' the pedestal 5 tor a tooth tester` the low voltage current to which is taken trom the small step-up transformer 97il the primary ot which is regulated by the voltage regulator tor the mouth lamp. An air lilter 198 may be connected between the piping 91 and 92 it desired.

lVe claim 1. A dental equipment comprising a pedstal, a unitary halting device set upon and forming a top l'or said pedestal, said device comprising receptacles t'or a tumbler and bottle. respect ive electric heating elements theretor, means for regulating said elements, and means t'or electrically connecting said elements to a circuit within said pedestal by setting said device thereon.

2. A dental equipment comprising a support having an electric circuit, a unitary heating device forming a top i'or said support, and comprising a receptacle, a heating element, and means l'or regulating said heating element, and means tor electrically connecting said clement to said c'rcuit by setting said device upon said support.

Z3. ln a dental equipment, a hollow support having an opening in one otI its walls, a trame a the out-'ide ot' said support for litting over said opening, rods extending from said trame into the support, means lor guiding said rods` a supporting plate mo :filed on the inner end ot said rods, and an electric lamp mounted on said plate. withdrawal o l` said trame troni said opening causing said plate to move outv-'ardly to er ,sc said lamp through said opening.

l. 1n a dental equipment, a viall having an opening ther' a trame slidably mounted on said wall. a closure o i alle outer end ot said Ytraine tor covering .said opening. a lamp supported on the inner end or said lame. outward movement oll said traine to uncover said closure trom said opening causing exposure ol .said lamp through :said opening.

5. ln a dental equipment', a support ing pcd cstal having an opening in its side wall. guidey lugs on said wall adiacenl to saifl opening, guide rods slidablc throngh said lugs, a closure trame on the trout ends o l said rods lcr engaging against the outside ot` said wall to cover said opening, a plate on the inner ends ot said rods. and a lamp on said plate. withdiawal ol' said l'rame trom .said opening Cai causing outward slide of mid rods und oxprmu'c of said hnnp through said opening, mi iii raino boing glazed.

(3. In :i dental cquiiinncnt. :1 pedestal hAv- .2 ingr :en opvning in one of thix sido Wallis, Stnlimmry guirh lugs :nijzlcvni to Said opi-ning.

u frnnm siidzihlo through Suid lugs, a closure nmnhor on 17h@ outer 0nd of Suid 'rulno for cloning Huid opening, and, n lmnp on the infi nor cud of said frame, outward shift of Suid fruiuo causing removal of said closure from said opening und exposure of said lainp through Said (spoiling.

Signed hy tl c Suid OSCAR H. Pimm, at Bodin, Urornniny, 22nd day of January, 1925.

OSCAR H. PIEPER. Signod by l'hv Suid ALPHONSE F. PIEPER :lt Rovhvser, in the county of Monroe und Stato of New York.

ALPHONSE F. PIEPER. 

